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Letters Patent No. 98,365, dated December 28, 1869'.

IMPRovnD sAsH-coan GIDELBLQCK The Schedule referred to in these Letters Patent and making part of the saine.

To all whom it may con-corn Beit known that I, J AMns M. FORD, of Brooklyn, in the countyr of Kings, and State of N ew York; have invented a new and valuable Improvement in-Sash- Cord Guide-Blocks; and I do here-by declare that the following isa full, clear, and exact description of the Aconstruction and operation of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of ret'- erence marked thereon.

Figure 1, of the drawing, is a longitudinal central section of my invention;

Figure 2 is a perspective view of the same.

Figure 3 is an end view of the same.

My invention relates to a means for supporting and guiding the balance-cords of windows; 'and consist-s, mainly, in the construction and novel arrangement of devices, whereby this object is satisfactorily attained.

yThe letter A, of the drawings, represents the guideblock, which is a cylindrical tube of hard Wood, metal, glass, or any other suitable material.

The bore -of the tube gradually expands toward each und, in such a manner that a. section of the bore, taken through the axis of the cylinder, will give a curve, as indicated in iig. 1.

This sectional curve may be semicircular, elliptical, or oi'-such other form as may be` desired, but is the same fr every element of the same block,'so that when it is inplace, it will will be seen that it makes no difference which side is up, or which end is driven in first.

On the external surface of the block A, are one or vmore worms, b, formed, by which it is secured when driven into an auger-hole in the sash.

I do not claim,.broadly,the screw-plug, when formed wit-h a straight bore; but,

What I claim as my invention, and desire to secure by Letters Patent, is-` The cylindrical tube herein described, having worms b,and isometrically-curved yborec, constructed and arranged to operate substantially as specified.

In testimony that I claim the above, Iv have hereunto subscribed my name, in the presence of two wit.

nesses.

JAMES M. FORD.

Witnesses;

JNO. GORMAN, WM. L. FORD. 

